Centre Manu Tuilagi is available for England’s Six Nations match against Ireland after recovering from a groin injury, says head coach Eddie Jones.
“It’s always good to get good players back,” Jones said.
Tuilagi, 28, was injured during England’s opening-round loss to France, while Watson and Slade are yet to play in this year’s tournament.
Jones added: “We haven’t had Slade the whole Six Nations and obviously had Manu just for the first game and they’re both quality players, so it’s good to have them back.”
If Slade is fit in time for the match, it will be his first game in two months after the 26-year-old was injured in Exeter’s win against Leicester on 21 December.
England are currently in camp in central London before the tournament’s first rest weekend and face unbeaten Ireland at Twickenham on 23 February.